Vehicle-spring.



G. G. GAMM'& C. F. NELSON.

VEHICLE SPRING.

APPLICATION FILED 0014,1913.

Patented Nov. 10, 1914.

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W lly Their A 1191 119195 U. G. GAMM & C. F. NELSON.

I VEHICLE SPRING.

APPLICATION FILED 0017.4.1913.

1 1 1 6,878. Patented Nov. 10, 1914.

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specification oi Letters Eatent.

Patented Nov, 1%, this re irman fi e embai, :eia seen in, teams.

To all wl'zoweiizmay concern: I Y

Be it known that we, Uri-Amine C. Glenn and CARL F. NELSON, citizens of the United the same.

Our invention has for its object to pro vide an improved vehicle spring, especially adapted for use in connection with autonio: biles, and to such ends, generally stated, the invention consists of the novel devices and combinations of devices hereinafter described and defined in the claim. I

In the accompanying drawings, which illustrate the invention, like characters indicate like parts throughout the several views.

Referring to'the drawings, Figure 1 is a rear elevation, showing parts of the running gear and body of an automobile, and

illustrating our improved spring mechanism arranged to support the latter .over the former, some parts being broken away; Fig.

2 is a side elevation of the parts shown Fig. 1, some parts being broken away; Fig. 3 is a detail in vertical section taken on the line m of Fig. 2; Fig. 4 is a vertical section taken approximately on the line 01 w of Fig. *1, some parts being shown in full; Fig. 5 is a horizontal section taken on the line 00 m of Fig. 3; and Fig. 6 is a. view in elevation showing one of the spring supporting brackets.

The numerals 1, 2 and 3 indicate, respectively, the" automobile body, the rear axle casing, and the rear wheels.

The numeral 4 indicates a semi-elliptical the intermediate outwardly bowed portion of which is directly'connected to the body 1.. This spring i, in the ordinary or old construction, would be connected at its ends by links 5 directly to so-called spring brackets, or other suitable parts on the vehicle running gear. In our improved spring mechanism, the spring i is used as a primary spring'and its ends are connected to suitable parts of the vehicle running gear, through so-called secondary springs. These secondary springs are preferably coiled springs 6 arranged in pairs on the opposite sides of the vehicle, seated on the laterallv which, in turn, are bolted or otherwise rigidly secured at 8 to under portionsoi the rear axle casing 52.

'Spring caps 9 are seatedori ends of the so-called secondary spring 8. Recoil springs 10 are seated on low er spring against the under surfaces of the iii-turned ends of the spring brackets 7. The spring brackets 7 are formed with hubs thatteliascope into the ends of the coiled springs and l-zeep the same properly alined. Also, the in turned ends are perforated to afford to the spring caps 9 and 11. As shown, the lower ends of the bolts 12 are screwed. into he lower caps 11 and the threaded upper ends are loosely passed through the upper leaps, and are provided with nuts 13, by ad: iustments of which the normal tension of the springs 6 and ldmay be varied. In this twin or duplex arrangement of the secondary springs 6 and recoil springs 10, the iii-turned portions of the brackets 7 and the spring caps 9 and 11 are each: provided with two sets of bosses for engagement with the twin springs; and, of course, two bolts 12 grelulsed to connect each pair of spring caps The links 5 which, as previously noted, are pivotally connected to the ends of the primary spring i, are pivotally connected at their upper ends to lugs 14: on the bottoms otthe lower spring caps 11, and these same lugs are pivotally connected to their inner ends of short thrust links 15, the outer ends of which are pivotally connected to the respective spring brackets 7. Preferably, and as shown, the links 5 are each made up of two short laterally spaced metal straps. T he tension of the secondary spring 6 should be so set that, under light loads ,and under will be taken and absorbed by the primary spring 4, but so that, under heavy loads or extreme vibrations, the coiled secondary spring 6 will yield and give increased resilience, and, also, thereby relieve the primary spring from extreme strains. The thrust links 15 permit free movements of the springs, 4 and 6 but hold the body of the vehicle and the primary spring 4 against calls 11 with their upper ends? bearing.

ordinary running conditions. the vibrations inbent ends of so-called springbrackets- '7, I

he. upper.

caps 9 and 1,1 and the iii-turned 1 1. of, the

ample clearance "for hanger-bolts 12 that are extended thcrethrough, and are connected through a passageway and body of a vehicle; of

lateral movements transrersely of the run- The recoil springs 10 prevent ning gear. bounding, and t-he primary and secondary springs recoiiai'ter a sudden and extreme depression.

securedto said body, said intriguing gear, a

1 bracket, upper and lower spring caps on said hanger rod, a secondary spring compressed between said spring bracket and said upper {spring cap, pressedhetiveen said spring bracket and saidlower springcap, and a toggle link pivotail-y connected at its joint to the lower end of said\hanger rod and pivotally coir nected at one oi itsends to said primarv spring and at its other end tosaid spring bracket, the end of said toggle link which i pivotally connected to said spring bracket holding said hanger rod' against lateral a recoil spring com swinging movement under the action of said 3 primary spring.

In testimony whereof we allix our signatures in presence of two witnesses.

CHARLES C. GAMM. CARL F. NELSON. \Vitnesses 1 EMILY M. KING, HARRY D. Kinsonn. 

